Machine for registering work



Jan. 26, 1965 P. B. JENSEN 3,166,758

MACHINE Foa REGISTERING WORK Filed Nov. 14, 196s United States Patent O3,166,758 MACHNE FR REGISTERWG WORK Philip E. lleasen, Naugatuck, Conn.,assigner to Scovill Manufacturing Company, Waterbury, Conn., acorporation of Connecticut Filed Nov. 14, 1963, Ser. No. 323,738 3Claims. (Cl. 1--318) This invention relates to a setting die for use infastener-setting machines and particularly, to a die having means forproperly locating, prior to the fastener-setting operation, a Work pieceon which the fastener is to be set.

In the setting of snap fasteners to pocketbooks or like articles made fleather or similar material, it is necessary to pre-pierce a hole in thematerial at the point that the fastener has to be set. Heretofore, theoperator had to locate the article with the pre-pierced hole by sightand hand in line with the setting station of the machine. Often theholes in the article would be misaligned with the center of the settingstation so that the fastener would be set in an off position,consequently, out of line with its component member.

It is one of the objects of this invention to provide one of thefastener-setting dies with a central locating pin that is projected asubstantial distance beyond the working face of the die when the settingdies are apart so that the work piece can be properly located byinserting the projected pin through the pre-pierced hole in such workpiece prior to the setting operation.

Another feature of the invention is to retract the locating pin into thedie when the dies are closed to set a fastener and to provide means forholding it in such retracted position so as not to interfere with thefeeding of the fastener element or attaching element into the holdingjaws associated with said die, such holding means being automaticallyreleased on completion of the element feeding, so that the locating pinis projected to be in position for insertion into a pre-pierced hole ina work piece.

Other objects and advantages of the invention will be apparent from thefollowing description when considered in conjunction with theaccompanying drawing in which:

FIG. 1 is a front view of a portion of a fastener-setting machine havinga setting die embodying my invention and showing the setting machine inits normal inactive position;

FIG. 2 is an enlarged sectional view of the upper die with associatedmachine parts in the same position as FIG. 1;

FIG. 3 is a view similar to FIG. 2 but showing the locating pin of theupper die making Contact with the fastener element;

FIG. 4 is a similar view showing the setting dies in fastener-settingposition;

FIG. 5 is a similar View showing the upper die approaching the end ofits up-stroke;

FIG. 6 is a top plan view of the discharge end of the magazine feedtrack; and

FIG. 7 is a cross-sectional view of the fastener elements as they appearset upon a support piece.

Referring to the drawing wherein FIG. 1 shows a portion of afastener-setting machine, numeral 10 designates the frame having avertical head 11 in which is reciprocally mounted a plunger 12. Acombination setting die 13 and locating pin 14, which are parts of whatmay be called an upper die set, are fitted into the lower end of theplunger 12. The usual magazine track 15 and feed finger 16 are employedfor stacking, guiding and forcing a single attaching element into a pairof separable jaws 17 where the element is held in line with the settingdie. The feed finger 16 is carried by a slide 16a slidable in a guidebracket 1S attached to the frame 1i). The slide 16a is 3,166,758Patented Jan. 26, 1965 "ice operated in the usual manner by a lever'19forming a part of the machine.

The attaching element is here shown as an off-set washer 20 having acentral hole 20a. The washer is used for securing a socket element 21 toa support piece 22. The socket element 21 is of the spring wire type(see FiG. 5) having a hollow projecting shank 23 which is rst insertedthrough a pre-pierced opening 24 in the support piece and then rivetedover the upper face of the washer for holding the parts together. Thesocket element 21 is fed through a feed track in the usual manner andpositioned upon a lower die 25 which is part of the lower die set, andit is held there by a pair of spring-tensioned jaws 2e carried by aslidable block 27.

Considering now the details of the upper die 13, it will be observedthat it is formed with a reduced shank 28 fitted into the plunger 12 upto a shoulder 29. The lower end of the die 13 is formed with a suitablerecess 30 for receiving the washer 20. The locating pin 14 has anenlarged cylindrical head 31 on its upper end which is slidably mountedin a chamber 32 in said die and normally positioned against a shoulder33 at the base of said chamber by a coil spring 34. The coil spring 34is under compression between the pin head 31 and an adjustable screw 35threaded into the upper end of the chamber 32. The

screw 3S is provided with an integral stop pin 36, the purpose of whichwill be later explained.'

In order to feed the washer 20 into thejaws 17 without interference, itis necessary to retract the locating pin 14 into the die 13 and hold itthere for a period of time. For this purpose, the lower end of the pin14 is formed with a reduced stern 37 providing a shoulder 25, 38. Thelower end of the stem 37 supports the upsetting head 39 of the die, aswill appear later. The lower end of the die 13 is provided with atransverse hole 40 in which is slidably fitted a locking pin 41 having avertical slot 42 through which the locating pin 14 passes. The lockingpin 41 is normally urged to the right to a position where one end ofsaid slot bears against the locating pin 14, by a spring finger 43attached to the side of the die 13 as by a screw 44.

When the locating pin 14 is in its retracted locked position, as shownin FIG. 4, the shoulder 38 on said pin will abut against the uppersurface of the locking pin 41 for a portion of the machine cycle ofoperation. In order to release the locating pin 14 from its retractedlocked position,the feed finger 16 is formed with an upstanding lug 45in which is threaded a trip member 46, here shown as an adjustable screwnormally positioned in axial alignment with said locking pin 41.

Operation When the fastener-setting machine is in its normal inoperativeposition, the upper and lower die sets 13 and 25 will be spaced apartwith the locating pin 14 projecting downwardly from the upper die, asshown in FIGS. `1 and 2. It will be understood that the off-set washer2i) and socket element 21 will have been fed into their respective jawsfrom the previous cycle of operation.

The operator can now bring a piece of work 22 to the machine and withits pre-pierced holes 24, slip the piece of work upwardly around thelocating pin 14 and then set the machine into operation by tripping aclutch. As the upper die 13 descends, the jaws 17 will be carrieddownwardly with the die for a por-tion of its stroke and then stopped atabout the position shown in FIG. 3, whereupon the upper die willcontinue downwardly through the split jaws 17 picking up the washerelement 2) and carrying it down to the position of FIG. 4 where it isshown setting over the socket element 21 and bearing against theinterposed work piece 22. Y

The upsetting head 39 of the locating pin 14 will first rivet shank 23to complete the fastener-setting operation.

In this position, yit is to be noted that the stop shoulder 38 on thelocating pin 14 is located slightly above the lockingpin 41, whereuponthe spring finger 43 urges -said locating pin to the right so as topermit said locking pin to catch underneath said stop shoulder. Thelocating pin 14 will thus remain in locked position during the entireup-stroke of the setting die 13.

It will be understood that at the beginning of the machine cycle, theslide 16a With its associated feed finger 16 will move to the right, andat the same time, a single attaching element or washer 20 will bereleased from the stack of washers in the magazine track l by means of acut-Gif 47, and dropped to the discharge end of said track.

During the up-stroke of the die, the feed finger 16 will move inwardly,passing through a suitable slot 48 in the discharge end of the magazinetrack and pick up the previously dropped Washer, and feed it into aholding recess 49 in the split jaw 17.

At the end ofthe inner stroke of the feed finger 16, the trip member 46carried thereby, will abut one end of the locking pin 41 to release thelocating pin 14, and cause it to drop to its extended position. Upon thecompletion of the machine cycle, the support piece 22 with the fasenerparts attached thereto, as shown in FG. 5, may be removed from themachine and another support piece inserted and properly oriented aroundthe locating pin, ready for another cycle of operation.

One form of the invention is presented herein, but it Will beappreciated that Ithe invention is susceptible to other modified formscoming equally Within the scope of the appended claims.

What Iv claim is:

1. In a machine for setting fasteners to a ilexible Work Ypiece havingpre-pierced holes therein, with a fastener element on one side of theWork piece and having a projection extending through one of suchpre-pierced holes and secured by an aper'tured attaching element on theopposite side of said Work piece, the combination comprising (a) one dieset for holding the fastener member;

b) a second die set for holding the attaching element;

(c) means including a reciprocating feeding finger for moving theattaching element into position in said second die set;

(d) a locating pin arranged axially of said second die set and adaptedto be resiliently projected a substantial distance beyond said seconddie set into position for receiving a pre-pierced hole in the Work piecefor locating said work piece, said locating pin being adapted to engagethe fastener element when said die sets are moved toward each other andto retract away from such projected position;

(e) a catch for automatically engaging said locating pin to retain it insuch retracted position; and

(,f) means carried by said feed nger to release said catch uponcompletion of the feeding movement of such finger.

in a machine for setting 'fasteners to a flexible work price havingpre-pierced holes therein, with a fastener eiement on one side of theWork piece and having a projection extending through one of suchpre-pierced holes and secured by an apertured attaching element on theopposite side of said work piece, the combination comprising (a) one dieset for holding the fastener member;

(b) a second die set for holding the attaching element;

(c) means including a reciprocating feeding nger for moving theattaching element into position in said second die set;

(d) an elongated locating pin slidable in an axial guideway in saidsecond die set;

(e) a coil spring in said second die set bearing on one end of said pinand adapted to project the other end of the pin a substantial distancebeyond said second die set so that one of the pre-pierced holes in awork piece can be placed over the pin for locating the work piece, saidpin being automatically retractable when the dies are closed byengagement of its projected end with a fastener element in the tirst dieset;

(j) a spring catch for automaticaily holding said pin in retractedposition on opening of the dies and means carried by said feed finger torelease said catch at the completion of the feed-ing movement of such:linger to allow said spring to project the locating pin through theapertured attaching element in said second die set so as to be inposition for again receiving a pre-pierced hole in a Work piece.

3. The combination detined in claim 2 together with a positive stop insaid second die set engageable by said locating pin to limit its travel.

No references cited.

KAL A

1. IN A MACHINE FOR SETTING FASTENERS TO A FLEXIBLE WORK PIECE HAVING APRE-PIERCED HOLES THEREIN, WITH A FASTENER ELEMENT ON ONE SIDE OF THEWORK PIECE AND HAVING A PROJECTION EXTENDING THROUGH OF SUCH PRE-PIERCEDHOLES AND SECURED BY AN APERTURED ATTACHING ELEMENT ON THE OPPOSITE SIDEOF SAID WORK PIECE, THE COMBINATION COMPRISING (A) ONE DIE SET FORHOLDING THE FASTENER MEMBER; (B) A SECOND DIE SET FOR HOLDING THEATTACHING ELEMENT; (C) MEANS INCLUDING A RECIPROCATING FEEDING FINGERFOR MOVING THE ATTACHING ELEMENT INTO POSITION IN SAID SECOND DIE SET;(D) A LOCATING PIN ARRANGED AXIALLY OF SAID SECOND DIE SET AND ADAPTEDTO BE RESILIENTLY PROJECTED A SUBSTANTIAL DISTANCE BEYOND SAID SECONDDIE SET INTO POSITION FOR RECEIVING A PRE-PIERCED HOLE IN THE WORK PIECEFOR LOCATING SAID WORK PIECE, SAID LOCATING PIN BEING ADAPTED TO ENGAGETHE FASTENER ELEMENT WHEN SAID DIE SETS ARE MOVED TOWARD EACH OTHER ANDTO RETRACT AWAY FROM SUCH PROJECTED POSITION; (E) A CATCH FORAUTOMATICALLY ENGAGING SAID LOCATING PIN TO RETAIN IT IN SUCH RETRACTEDPOSITION; AND (F) MEANS CARRIED BY SAID FEED FINGER TO RELEASE SAIDCATCH UPON COMPLETION OF THE FEEDING MOVEMENT OF SUCH FINGER.